Mathematical Biology Laboratory Department of Biology, Kyushu University


Yoh Iwasa


Yoh Iwasa

Email: yohiwasa[at]
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Professor, Department of Biology, Kyushu University
Director, Institute for Advanced Study Kyushu University


  • B.S. Kyoto University, Japan, 1975 (Mathematics and Biology)
  • M.S. Kyoto University, Japan, 1977 (Biophysics)
  • Ph.D. Kyoto University, Japan, 1980 (Biophysics)


  • Japan Society for the Promotion of Science for Young Scientists, DC (1979.4-1980.3)
  • Japan Society for the Promotion of Science for Young Scientists, PD (1980.4-1981.9)
  • Kyushu University, Assistant Professor (1985.1-1992.3)
  • Kyushu University, Professor (1992.3-present)
  • Institute for Advanced Study Kyushu University, Director (2010.4-present)
  • Visiting Professor at Bielefeld University (Germany, 1988), Imperial College (UK, 1992, 1994); Leiden University (The Netherland, 1993); University of Mennesota (US, 1998); IIASA (Austria, 1999) University of Montpellier (2000); Harvard University (US, 2003-2009)
  • Wissenschaft zu Berlin, Germany, Fellow (2006-2007)
  • Institute for Advanced Study Princeton, Member (US, 2002-2003).


Editor-in-Chief, Journal of Theoretical Biology (2005-present);
Editorial Board of the following Journals: Theoretical Population Biology; Journal of Mathmatical Biology; Bulletin of Mathematical Biology; Mathematical Biosciences, Theoretical Ecology; Evolutionary Ecology Research; Plant Ecology; Trends in Ecology and Evolution; Plant Species Biology; PeerJ; ISRN Evolutionary Biology; IAFOR Journal of Sustainability, Energy and The Environment; Applied Mathematics; International Journal of Evolutionary Biology; Frontiers in Zoology; Open Forest Science Letters.


Theoretical Biology. Examples of my study areas include: pattern formation in cone mosaic of fish retina, leaf vein formation, circadian rhythm, somatic evolution of cancer, genomic imprinting, mate preference evolution, forest dynamics both in temperate and tropics, species coexistence and diversity in coral reef, and population extinction risk of animals and plants.


  • Halley, J.M., and Y. Iwasa. 2011. Neutral theory as a predictor of avifaunal extinctions following habitat loss. Proc. Nat. Acad. Sci. USA 108:2316-2321.
  • Uriu, K., Y. Morishita, and Y. Iwasa. 2010. Synchronization of segmentation clock is promoted by random cell movement. Proc. Nat. Acad. Sci. USA 107:4979-4984.
  • Ohtsuki, H., Y.Iwasa, and M.A. Nowak. 2009. Indirect reciprocity provides only a narrow margin of efficiency for the costly punishment. Nature 457:179-182.
  • Iwasa, Y., M.A. Nowak, and F. Michor. 2006. Evolution of resistance in clonal expansion. Genetics 172:2557-2566.
  • Michor, F., T.P. Hughes, Y. Iwasa, S. Branford, N.P. Shah, C.L. Sawyers, and M.A. Nowak. 2005. Dynamics of chronic myeloid leukemia. Nature 435:1267-1270.
  • Ohtsuki, H. and Y. Iwasa. 2004. How should we define goodness? -- reputation dynamics in indirect reciprocity. Journal of Theoretical Biology 231:107-120.
  • Satake, A. and Y. Iwasa, 2000. Pollen-Coupling of forest trees, forming synchronized and periodic reproduction out of chaos. Journal of Theoretical Biology 203:63-84.
  • Iwasa, Y. and A. Pomiankowski, 1995. Continual change in mate preferences. Nature 377:420-422.
  • Iwasa, Y., A. Pomiankowski and S. Nee. 1991. The evolution of costly mate preferences. II. The "handicap" principle. Evolution 45:1431-1442.
  • Iwasa, Y., M. Higashi, and N. Yamamura. 1981. Prey distribution as a factor determining the choice of optimal foraging strategy. American Naturalist 117:710-723.

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